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TLE9185QXV33 Datasheet(PDF) 24 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 24 Page - Infineon Technologies AG |
24 / 192 page ![]() TLE9185QXV33 BLDC Driver System Features Datasheet 24 Rev.1.0 2021-01-21 5.4.7 Software Development Mode The Software Development Mode is a dedicated device configuration especially useful for software development. Compared to the default device user mode operation, this mode is a super set of the state machine. The device will start also in Init Mode and it is possible to use all the modes and functions with following differences: • Restart Mode or Fail-Safe Mode (depending on the configuration) is not reached due to watchdog failure but the other reasons to enter these modes are still valid. Software Development Mode entry For timing and configuration details, refer to Chapter 5.2. Note • After Init Mode, the pull-up is released as the INTN/TEST pin acts as output then to drive the INTN signal. • If the device enters Fail-Safe Mode due to VCC1 short circuit to GND during the Init Mode, the Software Development Mode will not be entered and can only be reached at the next power-up of the device after the VCC1 short circuit is removed. • The absolute maximum ratings of the pin INTN must be observed. To increase the robustness of this pin during debugging or programming a series resistor between INTN and the connector can be added. Watchdog in Software Development Mode The Watchdog is enabled in Software Development Mode as default state. One INTN event is generated due to wrong watchdog trigger. It is possible to deactivate the integrated Watchdog module using the WD_SDM_DISABLE bit. After disabling the Watchdog, no INTN events are generated and the WD_FAIL bit will also not be set anymore in case of a trigger failure. It is also possible only to mask / unmask the INTN event of the WD in Software Development Mode by using the bit WD_SDM. In case of unmasking, a WD trigger fail will only lead to WD_FAIL bit set. 5.5 Transition Between States This chapter describes the transition between the modes triggered by power-up, SPI commands or wake-up events. 5.5.1 Transition into Init Mode The device goes into Init Mode in case of a power-up or after sending a soft-reset in Normal or Stop Mode. Prerequisites: •Power OFF Table 11 Normal Mode Settings (Software Development Mode active) Part/Function Default State Description VCC1 ON •VCC1 is active WD ON • WD is on, but will not trigger transition to Fail-Safe Mode or Restart Mode BD/CP OFF • The Bridge Drivers and Charge Pump may be configured and switched ON or OFF by SPI Cyc. Wake OFF •Can be configured |
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